1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_BINFMT_ELF_STATE
6 select ARCH_CLOCKSOURCE_DATA
7 select ARCH_DISCARD_MEMBLOCK
8 select ARCH_HAS_ELF_RANDOMIZE
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_MIGHT_HAVE_PC_PARPORT
11 select ARCH_MIGHT_HAVE_PC_SERIO
12 select ARCH_SUPPORTS_UPROBES
13 select ARCH_USE_BUILTIN_BSWAP
14 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
15 select ARCH_USE_QUEUED_RWLOCKS
16 select ARCH_USE_QUEUED_SPINLOCKS
17 select ARCH_WANT_IPC_PARSE_VERSION
18 select BUILDTIME_EXTABLE_SORT
19 select CLONE_BACKWARDS
20 select CPU_PM if CPU_IDLE
21 select GENERIC_ATOMIC64 if !64BIT
22 select GENERIC_CLOCKEVENTS
23 select GENERIC_CMOS_UPDATE
24 select GENERIC_CPU_AUTOPROBE
25 select GENERIC_IRQ_PROBE
26 select GENERIC_IRQ_SHOW
27 select GENERIC_PCI_IOMAP
28 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
29 select GENERIC_SMP_IDLE_THREAD
30 select GENERIC_TIME_VSYSCALL
31 select HANDLE_DOMAIN_IRQ
32 select HAVE_ARCH_JUMP_LABEL
34 select HAVE_ARCH_MMAP_RND_BITS if MMU
35 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
36 select HAVE_ARCH_SECCOMP_FILTER
37 select HAVE_ARCH_TRACEHOOK
38 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
39 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
40 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
41 select HAVE_CC_STACKPROTECTOR
42 select HAVE_CONTEXT_TRACKING
43 select HAVE_COPY_THREAD_TLS
44 select HAVE_C_RECORDMCOUNT
45 select HAVE_DEBUG_KMEMLEAK
46 select HAVE_DEBUG_STACKOVERFLOW
47 select HAVE_DMA_API_DEBUG
48 select HAVE_DMA_CONTIGUOUS
49 select HAVE_DYNAMIC_FTRACE
50 select HAVE_EXIT_THREAD
51 select HAVE_FTRACE_MCOUNT_RECORD
52 select HAVE_FUNCTION_GRAPH_TRACER
53 select HAVE_FUNCTION_TRACER
54 select HAVE_GENERIC_DMA_COHERENT
56 select HAVE_IRQ_EXIT_ON_IRQ_STACK
57 select HAVE_IRQ_TIME_ACCOUNTING
59 select HAVE_KRETPROBES
61 select HAVE_MEMBLOCK_NODE_MAP
62 select HAVE_MOD_ARCH_SPECIFIC
65 select HAVE_PERF_EVENTS
66 select HAVE_REGS_AND_STACK_ACCESS_API
67 select HAVE_SYSCALL_TRACEPOINTS
68 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
69 select IRQ_FORCED_THREADING
70 select MODULES_USE_ELF_RELA if MODULES && 64BIT
71 select MODULES_USE_ELF_REL if MODULES
72 select PERF_USE_VMALLOC
73 select RTC_LIB if !MACH_LOONGSON64
74 select SYSCTL_EXCEPTION_TRACE
77 menu "Machine selection"
84 bool "Generic board-agnostic MIPS kernel"
88 select CLKSRC_MIPS_GIC
90 select CPU_MIPSR2_IRQ_VI
91 select CPU_MIPSR2_IRQ_EI
93 select DMA_PERDEV_COHERENT
97 select MIPS_CPU_SCACHE
99 select MIPS_L1_CACHE_SHIFT_7
100 select NO_EXCEPT_FILL
101 select PCI_DRIVERS_GENERIC
105 select SYS_HAS_CPU_MIPS32_R1
106 select SYS_HAS_CPU_MIPS32_R2
107 select SYS_HAS_CPU_MIPS32_R6
108 select SYS_HAS_CPU_MIPS64_R1
109 select SYS_HAS_CPU_MIPS64_R2
110 select SYS_HAS_CPU_MIPS64_R6
111 select SYS_SUPPORTS_32BIT_KERNEL
112 select SYS_SUPPORTS_64BIT_KERNEL
113 select SYS_SUPPORTS_BIG_ENDIAN
114 select SYS_SUPPORTS_HIGHMEM
115 select SYS_SUPPORTS_LITTLE_ENDIAN
116 select SYS_SUPPORTS_MICROMIPS
117 select SYS_SUPPORTS_MIPS_CPS
118 select SYS_SUPPORTS_MIPS16
119 select SYS_SUPPORTS_MULTITHREADING
120 select SYS_SUPPORTS_RELOCATABLE
121 select SYS_SUPPORTS_SMARTMIPS
122 select USB_EHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
123 select USB_EHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
124 select USB_OHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
125 select USB_OHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
126 select USB_UHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
127 select USB_UHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
130 Select this to build a kernel which aims to support multiple boards,
131 generally using a flattened device tree passed from the bootloader
132 using the boot protocol defined in the UHI (Unified Hosting
133 Interface) specification.
136 bool "Alchemy processor based machines"
137 select ARCH_PHYS_ADDR_T_64BIT
141 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
142 select SYS_HAS_CPU_MIPS32_R1
143 select SYS_SUPPORTS_32BIT_KERNEL
144 select SYS_SUPPORTS_APM_EMULATION
146 select SYS_SUPPORTS_ZBOOT
150 bool "Texas Instruments AR7"
152 select DMA_NONCOHERENT
156 select NO_EXCEPT_FILL
158 select SYS_HAS_CPU_MIPS32_R1
159 select SYS_HAS_EARLY_PRINTK
160 select SYS_SUPPORTS_32BIT_KERNEL
161 select SYS_SUPPORTS_LITTLE_ENDIAN
162 select SYS_SUPPORTS_MIPS16
163 select SYS_SUPPORTS_ZBOOT_UART16550
168 Support for the Texas Instruments AR7 System-on-a-Chip
169 family: TNETD7100, 7200 and 7300.
172 bool "Atheros AR231x/AR531x SoC support"
175 select DMA_NONCOHERENT
178 select SYS_HAS_CPU_MIPS32_R1
179 select SYS_SUPPORTS_BIG_ENDIAN
180 select SYS_SUPPORTS_32BIT_KERNEL
181 select SYS_HAS_EARLY_PRINTK
183 Support for Atheros AR231x and Atheros AR531x based boards
186 bool "Atheros AR71XX/AR724X/AR913X based boards"
187 select ARCH_HAS_RESET_CONTROLLER
191 select DMA_NONCOHERENT
198 select SYS_HAS_CPU_MIPS32_R2
199 select SYS_HAS_EARLY_PRINTK
200 select SYS_SUPPORTS_32BIT_KERNEL
201 select SYS_SUPPORTS_BIG_ENDIAN
202 select SYS_SUPPORTS_MIPS16
203 select SYS_SUPPORTS_ZBOOT_UART_PROM
206 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
209 bool "Broadcom Generic BMIPS kernel"
211 select NO_EXCEPT_FILL
217 select BCM6345_L1_IRQ
218 select BCM7038_L1_IRQ
219 select BCM7120_L2_IRQ
220 select BRCMSTB_L2_IRQ
222 select DMA_NONCOHERENT
223 select SYS_SUPPORTS_32BIT_KERNEL
224 select SYS_SUPPORTS_LITTLE_ENDIAN
225 select SYS_SUPPORTS_BIG_ENDIAN
226 select SYS_SUPPORTS_HIGHMEM
227 select SYS_HAS_CPU_BMIPS32_3300
228 select SYS_HAS_CPU_BMIPS4350
229 select SYS_HAS_CPU_BMIPS4380
230 select SYS_HAS_CPU_BMIPS5000
232 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
233 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
234 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
235 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
236 select HARDIRQS_SW_RESEND
238 Build a generic DT-based kernel image that boots on select
239 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
240 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
241 must be set appropriately for your board.
244 bool "Broadcom BCM47XX based boards"
248 select DMA_NONCOHERENT
251 select SYS_HAS_CPU_MIPS32_R1
252 select NO_EXCEPT_FILL
253 select SYS_SUPPORTS_32BIT_KERNEL
254 select SYS_SUPPORTS_LITTLE_ENDIAN
255 select SYS_SUPPORTS_MIPS16
256 select SYS_HAS_EARLY_PRINTK
257 select USE_GENERIC_EARLY_PRINTK_8250
259 select LEDS_GPIO_REGISTER
262 select BCM47XX_SSB if !BCM47XX_BCMA
264 Support for BCM47XX based boards
267 bool "Broadcom BCM63XX based boards"
272 select DMA_NONCOHERENT
274 select SYS_SUPPORTS_32BIT_KERNEL
275 select SYS_SUPPORTS_BIG_ENDIAN
276 select SYS_HAS_EARLY_PRINTK
280 select MIPS_L1_CACHE_SHIFT_4
283 Support for BCM63XX based boards
290 select DMA_NONCOHERENT
296 select PCI_GT64XXX_PCI0
298 select SYS_HAS_CPU_NEVADA
299 select SYS_HAS_EARLY_PRINTK
300 select SYS_SUPPORTS_32BIT_KERNEL
301 select SYS_SUPPORTS_64BIT_KERNEL
302 select SYS_SUPPORTS_LITTLE_ENDIAN
303 select USE_GENERIC_EARLY_PRINTK_8250
305 config MACH_DECSTATION
309 select CEVT_R4K if CPU_R4X00
311 select CSRC_R4K if CPU_R4X00
312 select CPU_DADDI_WORKAROUNDS if 64BIT
313 select CPU_R4000_WORKAROUNDS if 64BIT
314 select CPU_R4400_WORKAROUNDS if 64BIT
315 select DMA_NONCOHERENT
318 select SYS_HAS_CPU_R3000
319 select SYS_HAS_CPU_R4X00
320 select SYS_SUPPORTS_32BIT_KERNEL
321 select SYS_SUPPORTS_64BIT_KERNEL
322 select SYS_SUPPORTS_LITTLE_ENDIAN
323 select SYS_SUPPORTS_128HZ
324 select SYS_SUPPORTS_256HZ
325 select SYS_SUPPORTS_1024HZ
326 select MIPS_L1_CACHE_SHIFT_4
328 This enables support for DEC's MIPS based workstations. For details
329 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
330 DECstation porting pages on <http://decstation.unix-ag.org/>.
332 If you have one of the following DECstation Models you definitely
333 want to choose R4xx0 for the CPU Type:
340 otherwise choose R3000.
343 bool "Jazz family of machines"
346 select ARCH_MAY_HAVE_PC_FDC
349 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
350 select GENERIC_ISA_DMA
351 select HAVE_PCSPKR_PLATFORM
356 select SYS_HAS_CPU_R4X00
357 select SYS_SUPPORTS_32BIT_KERNEL
358 select SYS_SUPPORTS_64BIT_KERNEL
359 select SYS_SUPPORTS_100HZ
361 This a family of machines based on the MIPS R4030 chipset which was
362 used by several vendors to build RISC/os and Windows NT workstations.
363 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
364 Olivetti M700-10 workstations.
367 bool "Ingenic SoC based machines"
368 select SYS_SUPPORTS_32BIT_KERNEL
369 select SYS_SUPPORTS_LITTLE_ENDIAN
370 select SYS_SUPPORTS_ZBOOT_UART16550
371 select DMA_NONCOHERENT
376 select GENERIC_IRQ_CHIP
382 bool "Lantiq based platforms"
383 select DMA_NONCOHERENT
387 select SYS_HAS_CPU_MIPS32_R1
388 select SYS_HAS_CPU_MIPS32_R2
389 select SYS_SUPPORTS_BIG_ENDIAN
390 select SYS_SUPPORTS_32BIT_KERNEL
391 select SYS_SUPPORTS_MIPS16
392 select SYS_SUPPORTS_MULTITHREADING
393 select SYS_SUPPORTS_VPE_LOADER
394 select SYS_HAS_EARLY_PRINTK
401 select PINCTRL_LANTIQ
402 select ARCH_HAS_RESET_CONTROLLER
403 select RESET_CONTROLLER
406 bool "LASAT Networks platforms"
410 select DMA_NONCOHERENT
411 select SYS_HAS_EARLY_PRINTK
414 select PCI_GT64XXX_PCI0
416 select R5000_CPU_SCACHE
417 select SYS_HAS_CPU_R5000
418 select SYS_SUPPORTS_32BIT_KERNEL
419 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
420 select SYS_SUPPORTS_LITTLE_ENDIAN
422 config MACH_LOONGSON32
423 bool "Loongson-1 family of machines"
424 select SYS_SUPPORTS_ZBOOT
426 This enables support for the Loongson-1 family of machines.
428 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
429 the Institute of Computing Technology (ICT), Chinese Academy of
432 config MACH_LOONGSON64
433 bool "Loongson-2/3 family of machines"
434 select ARCH_HAS_PHYS_TO_DMA
435 select SYS_SUPPORTS_ZBOOT
437 This enables the support of Loongson-2/3 family of machines.
439 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
440 family of multi-core CPUs. They are both 64-bit general-purpose
441 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
442 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
443 in the People's Republic of China. The chief architect is Professor
446 config MACH_PISTACHIO
447 bool "IMG Pistachio SoC based boards"
451 select CLKSRC_MIPS_GIC
454 select DMA_NONCOHERENT
459 select MIPS_CPU_SCACHE
463 select SYS_HAS_CPU_MIPS32_R2
464 select SYS_SUPPORTS_32BIT_KERNEL
465 select SYS_SUPPORTS_LITTLE_ENDIAN
466 select SYS_SUPPORTS_MIPS_CPS
467 select SYS_SUPPORTS_MULTITHREADING
468 select SYS_SUPPORTS_RELOCATABLE
469 select SYS_SUPPORTS_ZBOOT
470 select SYS_HAS_EARLY_PRINTK
471 select USE_GENERIC_EARLY_PRINTK_8250
474 This enables support for the IMG Pistachio SoC platform.
477 bool "MIPS Malta board"
478 select ARCH_MAY_HAVE_PC_FDC
484 select CLKSRC_MIPS_GIC
486 select DMA_MAYBE_COHERENT
487 select GENERIC_ISA_DMA
488 select HAVE_PCSPKR_PLATFORM
495 select MIPS_CPU_SCACHE
496 select MIPS_L1_CACHE_SHIFT_6
497 select PCI_GT64XXX_PCI0
501 select SYS_HAS_CPU_MIPS32_R1
502 select SYS_HAS_CPU_MIPS32_R2
503 select SYS_HAS_CPU_MIPS32_R3_5
504 select SYS_HAS_CPU_MIPS32_R5
505 select SYS_HAS_CPU_MIPS32_R6
506 select SYS_HAS_CPU_MIPS64_R1
507 select SYS_HAS_CPU_MIPS64_R2
508 select SYS_HAS_CPU_MIPS64_R6
509 select SYS_HAS_CPU_NEVADA
510 select SYS_HAS_CPU_RM7000
511 select SYS_SUPPORTS_32BIT_KERNEL
512 select SYS_SUPPORTS_64BIT_KERNEL
513 select SYS_SUPPORTS_BIG_ENDIAN
514 select SYS_SUPPORTS_HIGHMEM
515 select SYS_SUPPORTS_LITTLE_ENDIAN
516 select SYS_SUPPORTS_MICROMIPS
517 select SYS_SUPPORTS_MIPS_CMP
518 select SYS_SUPPORTS_MIPS_CPS
519 select SYS_SUPPORTS_MIPS16
520 select SYS_SUPPORTS_MULTITHREADING
521 select SYS_SUPPORTS_SMARTMIPS
522 select SYS_SUPPORTS_VPE_LOADER
523 select SYS_SUPPORTS_ZBOOT
524 select SYS_SUPPORTS_RELOCATABLE
527 select ZONE_DMA32 if 64BIT
531 This enables support for the MIPS Technologies Malta evaluation
535 bool "Microchip PIC32 Family"
537 This enables support for the Microchip PIC32 family of platforms.
539 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
543 bool "NEC EMMA2RH Mark-eins board"
547 This enables support for the NEC Electronics Mark-eins boards.
550 bool "NEC VR4100 series based machines"
553 select SYS_HAS_CPU_VR41XX
554 select SYS_SUPPORTS_MIPS16
558 bool "NXP STB220 board"
561 Support for NXP Semiconductors STB220 Development Board.
568 Support for NXP Semiconductors STB225 Development Board.
571 bool "PMC-Sierra MSP chipsets"
574 select DMA_NONCOHERENT
576 select NO_EXCEPT_FILL
578 select SYS_HAS_CPU_MIPS32_R1
579 select SYS_HAS_CPU_MIPS32_R2
580 select SYS_SUPPORTS_32BIT_KERNEL
581 select SYS_SUPPORTS_BIG_ENDIAN
582 select SYS_SUPPORTS_MIPS16
585 select SERIAL_8250_CONSOLE
586 select USB_EHCI_BIG_ENDIAN_MMIO
587 select USB_EHCI_BIG_ENDIAN_DESC
589 This adds support for the PMC-Sierra family of Multi-Service
590 Processor System-On-A-Chips. These parts include a number
591 of integrated peripherals, interfaces and DSPs in addition to
592 a variety of MIPS cores.
595 bool "Ralink based machines"
599 select DMA_NONCOHERENT
602 select SYS_HAS_CPU_MIPS32_R1
603 select SYS_HAS_CPU_MIPS32_R2
604 select SYS_SUPPORTS_32BIT_KERNEL
605 select SYS_SUPPORTS_LITTLE_ENDIAN
606 select SYS_SUPPORTS_MIPS16
607 select SYS_HAS_EARLY_PRINTK
609 select ARCH_HAS_RESET_CONTROLLER
610 select RESET_CONTROLLER
613 bool "SGI IP22 (Indy/Indigo2)"
619 select DEFAULT_SGI_PARTITION
620 select DMA_NONCOHERENT
624 select IP22_CPU_SCACHE
626 select GENERIC_ISA_DMA_SUPPORT_BROKEN
628 select SGI_HAS_INDYDOG
634 select SYS_HAS_CPU_R4X00
635 select SYS_HAS_CPU_R5000
637 # Disable EARLY_PRINTK for now since it leads to overwritten prom
638 # memory during early boot on some machines.
640 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
641 # for a more details discussion
643 # select SYS_HAS_EARLY_PRINTK
644 select SYS_SUPPORTS_32BIT_KERNEL
645 select SYS_SUPPORTS_64BIT_KERNEL
646 select SYS_SUPPORTS_BIG_ENDIAN
647 select MIPS_L1_CACHE_SHIFT_7
649 This are the SGI Indy, Challenge S and Indigo2, as well as certain
650 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
651 that runs on these, say Y here.
654 bool "SGI IP27 (Origin200/2000)"
658 select DEFAULT_SGI_PARTITION
660 select SYS_HAS_EARLY_PRINTK
662 select NR_CPUS_DEFAULT_64
663 select SYS_HAS_CPU_R10000
664 select SYS_SUPPORTS_64BIT_KERNEL
665 select SYS_SUPPORTS_BIG_ENDIAN
666 select SYS_SUPPORTS_NUMA
667 select SYS_SUPPORTS_SMP
668 select MIPS_L1_CACHE_SHIFT_7
670 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
671 workstations. To compile a Linux kernel that runs on these, say Y
675 bool "SGI IP28 (Indigo2 R10k)"
681 select DEFAULT_SGI_PARTITION
682 select DMA_NONCOHERENT
683 select GENERIC_ISA_DMA_SUPPORT_BROKEN
689 select SGI_HAS_INDYDOG
695 select SYS_HAS_CPU_R10000
697 # Disable EARLY_PRINTK for now since it leads to overwritten prom
698 # memory during early boot on some machines.
700 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
701 # for a more details discussion
703 # select SYS_HAS_EARLY_PRINTK
704 select SYS_SUPPORTS_64BIT_KERNEL
705 select SYS_SUPPORTS_BIG_ENDIAN
706 select MIPS_L1_CACHE_SHIFT_7
708 This is the SGI Indigo2 with R10000 processor. To compile a Linux
709 kernel that runs on these, say Y here.
718 select DMA_NONCOHERENT
721 select R5000_CPU_SCACHE
722 select RM7000_CPU_SCACHE
723 select SYS_HAS_CPU_R5000
724 select SYS_HAS_CPU_R10000 if BROKEN
725 select SYS_HAS_CPU_RM7000
726 select SYS_HAS_CPU_NEVADA
727 select SYS_SUPPORTS_64BIT_KERNEL
728 select SYS_SUPPORTS_BIG_ENDIAN
730 If you want this kernel to run on SGI O2 workstation, say Y here.
733 bool "Sibyte BCM91120C-CRhine"
736 select SIBYTE_BCM1120
738 select SYS_HAS_CPU_SB1
739 select SYS_SUPPORTS_BIG_ENDIAN
740 select SYS_SUPPORTS_LITTLE_ENDIAN
743 bool "Sibyte BCM91120x-Carmel"
746 select SIBYTE_BCM1120
748 select SYS_HAS_CPU_SB1
749 select SYS_SUPPORTS_BIG_ENDIAN
750 select SYS_SUPPORTS_LITTLE_ENDIAN
753 bool "Sibyte BCM91125C-CRhone"
756 select SIBYTE_BCM1125
758 select SYS_HAS_CPU_SB1
759 select SYS_SUPPORTS_BIG_ENDIAN
760 select SYS_SUPPORTS_HIGHMEM
761 select SYS_SUPPORTS_LITTLE_ENDIAN
764 bool "Sibyte BCM91125E-Rhone"
767 select SIBYTE_BCM1125H
769 select SYS_HAS_CPU_SB1
770 select SYS_SUPPORTS_BIG_ENDIAN
771 select SYS_SUPPORTS_LITTLE_ENDIAN
774 bool "Sibyte BCM91250A-SWARM"
777 select HAVE_PATA_PLATFORM
780 select SYS_HAS_CPU_SB1
781 select SYS_SUPPORTS_BIG_ENDIAN
782 select SYS_SUPPORTS_HIGHMEM
783 select SYS_SUPPORTS_LITTLE_ENDIAN
784 select ZONE_DMA32 if 64BIT
786 config SIBYTE_LITTLESUR
787 bool "Sibyte BCM91250C2-LittleSur"
790 select HAVE_PATA_PLATFORM
793 select SYS_HAS_CPU_SB1
794 select SYS_SUPPORTS_BIG_ENDIAN
795 select SYS_SUPPORTS_HIGHMEM
796 select SYS_SUPPORTS_LITTLE_ENDIAN
798 config SIBYTE_SENTOSA
799 bool "Sibyte BCM91250E-Sentosa"
804 select SYS_HAS_CPU_SB1
805 select SYS_SUPPORTS_BIG_ENDIAN
806 select SYS_SUPPORTS_LITTLE_ENDIAN
809 bool "Sibyte BCM91480B-BigSur"
812 select NR_CPUS_DEFAULT_4
813 select SIBYTE_BCM1x80
815 select SYS_HAS_CPU_SB1
816 select SYS_SUPPORTS_BIG_ENDIAN
817 select SYS_SUPPORTS_HIGHMEM
818 select SYS_SUPPORTS_LITTLE_ENDIAN
819 select ZONE_DMA32 if 64BIT
822 bool "SNI RM200/300/400"
823 select FW_ARC if CPU_LITTLE_ENDIAN
824 select FW_ARC32 if CPU_LITTLE_ENDIAN
825 select FW_SNIPROM if CPU_BIG_ENDIAN
826 select ARCH_MAY_HAVE_PC_FDC
830 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
831 select DMA_NONCOHERENT
832 select GENERIC_ISA_DMA
833 select HAVE_PCSPKR_PLATFORM
840 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
841 select SYS_HAS_CPU_R4X00
842 select SYS_HAS_CPU_R5000
843 select SYS_HAS_CPU_R10000
844 select R5000_CPU_SCACHE
845 select SYS_HAS_EARLY_PRINTK
846 select SYS_SUPPORTS_32BIT_KERNEL
847 select SYS_SUPPORTS_64BIT_KERNEL
848 select SYS_SUPPORTS_BIG_ENDIAN
849 select SYS_SUPPORTS_HIGHMEM
850 select SYS_SUPPORTS_LITTLE_ENDIAN
852 The SNI RM200/300/400 are MIPS-based machines manufactured by
853 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
854 Technology and now in turn merged with Fujitsu. Say Y here to
855 support this machine type.
858 bool "Toshiba TX39 series based machines"
861 bool "Toshiba TX49 series based machines"
863 config MIKROTIK_RB532
864 bool "Mikrotik RB532 boards"
867 select DMA_NONCOHERENT
870 select SYS_HAS_CPU_MIPS32_R1
871 select SYS_SUPPORTS_32BIT_KERNEL
872 select SYS_SUPPORTS_LITTLE_ENDIAN
876 select MIPS_L1_CACHE_SHIFT_4
878 Support the Mikrotik(tm) RouterBoard 532 series,
879 based on the IDT RC32434 SoC.
881 config CAVIUM_OCTEON_SOC
882 bool "Cavium Networks Octeon SoC based boards"
884 select ARCH_HAS_PHYS_TO_DMA
885 select ARCH_PHYS_ADDR_T_64BIT
887 select SYS_SUPPORTS_64BIT_KERNEL
888 select SYS_SUPPORTS_BIG_ENDIAN
890 select EDAC_ATOMIC_SCRUB
891 select SYS_SUPPORTS_LITTLE_ENDIAN
892 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
893 select SYS_HAS_EARLY_PRINTK
894 select SYS_HAS_CPU_CAVIUM_OCTEON
901 select ARCH_SPARSEMEM_ENABLE
902 select SYS_SUPPORTS_SMP
903 select NR_CPUS_DEFAULT_64
904 select MIPS_NR_CPU_NR_MAP_1024
906 select MTD_COMPLEX_MAPPINGS
907 select SYS_SUPPORTS_RELOCATABLE
909 This option supports all of the Octeon reference boards from Cavium
910 Networks. It builds a kernel that dynamically determines the Octeon
911 CPU type and supports all known board reference implementations.
912 Some of the supported boards are:
919 Say Y here for most Octeon reference boards.
922 bool "Netlogic XLR/XLS based systems"
925 select SYS_HAS_CPU_XLR
926 select SYS_SUPPORTS_SMP
929 select SYS_SUPPORTS_32BIT_KERNEL
930 select SYS_SUPPORTS_64BIT_KERNEL
931 select ARCH_PHYS_ADDR_T_64BIT
932 select SYS_SUPPORTS_BIG_ENDIAN
933 select SYS_SUPPORTS_HIGHMEM
935 select NR_CPUS_DEFAULT_32
939 select ZONE_DMA32 if 64BIT
941 select SYS_HAS_EARLY_PRINTK
942 select SYS_SUPPORTS_ZBOOT
943 select SYS_SUPPORTS_ZBOOT_UART16550
945 Support for systems based on Netlogic XLR and XLS processors.
946 Say Y here if you have a XLR or XLS based board.
949 bool "Netlogic XLP based systems"
952 select SYS_HAS_CPU_XLP
953 select SYS_SUPPORTS_SMP
955 select SYS_SUPPORTS_32BIT_KERNEL
956 select SYS_SUPPORTS_64BIT_KERNEL
957 select ARCH_PHYS_ADDR_T_64BIT
959 select SYS_SUPPORTS_BIG_ENDIAN
960 select SYS_SUPPORTS_LITTLE_ENDIAN
961 select SYS_SUPPORTS_HIGHMEM
963 select NR_CPUS_DEFAULT_32
967 select ZONE_DMA32 if 64BIT
969 select SYS_HAS_EARLY_PRINTK
971 select SYS_SUPPORTS_ZBOOT
972 select SYS_SUPPORTS_ZBOOT_UART16550
974 This board is based on Netlogic XLP Processor.
975 Say Y here if you have a XLP based board.
978 bool "Para-Virtualized guest system"
982 select SYS_SUPPORTS_64BIT_KERNEL
983 select SYS_SUPPORTS_32BIT_KERNEL
984 select SYS_SUPPORTS_BIG_ENDIAN
985 select SYS_SUPPORTS_SMP
986 select NR_CPUS_DEFAULT_4
987 select SYS_HAS_EARLY_PRINTK
988 select SYS_HAS_CPU_MIPS32_R2
989 select SYS_HAS_CPU_MIPS64_R2
990 select SYS_HAS_CPU_CAVIUM_OCTEON
994 This option supports guest running under ????
998 source "arch/mips/alchemy/Kconfig"
999 source "arch/mips/ath25/Kconfig"
1000 source "arch/mips/ath79/Kconfig"
1001 source "arch/mips/bcm47xx/Kconfig"
1002 source "arch/mips/bcm63xx/Kconfig"
1003 source "arch/mips/bmips/Kconfig"
1004 source "arch/mips/generic/Kconfig"
1005 source "arch/mips/jazz/Kconfig"
1006 source "arch/mips/jz4740/Kconfig"
1007 source "arch/mips/lantiq/Kconfig"
1008 source "arch/mips/lasat/Kconfig"
1009 source "arch/mips/pic32/Kconfig"
1010 source "arch/mips/pistachio/Kconfig"
1011 source "arch/mips/pmcs-msp71xx/Kconfig"
1012 source "arch/mips/ralink/Kconfig"
1013 source "arch/mips/sgi-ip27/Kconfig"
1014 source "arch/mips/sibyte/Kconfig"
1015 source "arch/mips/txx9/Kconfig"
1016 source "arch/mips/vr41xx/Kconfig"
1017 source "arch/mips/cavium-octeon/Kconfig"
1018 source "arch/mips/loongson32/Kconfig"
1019 source "arch/mips/loongson64/Kconfig"
1020 source "arch/mips/netlogic/Kconfig"
1021 source "arch/mips/paravirt/Kconfig"
1025 config RWSEM_GENERIC_SPINLOCK
1029 config RWSEM_XCHGADD_ALGORITHM
1032 config GENERIC_HWEIGHT
1036 config GENERIC_CALIBRATE_DELAY
1040 config SCHED_OMIT_FRAME_POINTER
1045 # Select some configuration options automatically based on user selections.
1050 config ARCH_MAY_HAVE_PC_FDC
1086 config MIPS_CLOCK_VSYSCALL
1087 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1096 config ARCH_DMA_ADDR_T_64BIT
1097 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1099 config ARCH_SUPPORTS_UPROBES
1102 config DMA_MAYBE_COHERENT
1103 select DMA_NONCOHERENT
1106 config DMA_PERDEV_COHERENT
1108 select DMA_MAYBE_COHERENT
1113 config DMA_NONCOHERENT
1115 select NEED_DMA_MAP_STATE
1117 config NEED_DMA_MAP_STATE
1120 config SYS_HAS_EARLY_PRINTK
1123 config SYS_SUPPORTS_HOTPLUG_CPU
1126 config MIPS_BONITO64
1141 config NO_IOPORT_MAP
1147 config GENERIC_ISA_DMA
1149 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1152 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1154 select GENERIC_ISA_DMA
1159 config HOLES_IN_ZONE
1162 config SYS_SUPPORTS_RELOCATABLE
1165 Selected if the platform supports relocating the kernel.
1166 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1167 to allow access to command line and entropy sources.
1169 config MIPS_CBPF_JIT
1171 depends on BPF_JIT && HAVE_CBPF_JIT
1173 config MIPS_EBPF_JIT
1175 depends on BPF_JIT && HAVE_EBPF_JIT
1179 # Endianness selection. Sufficiently obscure so many users don't know what to
1180 # answer,so we try hard to limit the available choices. Also the use of a
1181 # choice statement should be more obvious to the user.
1184 prompt "Endianness selection"
1186 Some MIPS machines can be configured for either little or big endian
1187 byte order. These modes require different kernels and a different
1188 Linux distribution. In general there is one preferred byteorder for a
1189 particular system but some systems are just as commonly used in the
1190 one or the other endianness.
1192 config CPU_BIG_ENDIAN
1194 depends on SYS_SUPPORTS_BIG_ENDIAN
1196 config CPU_LITTLE_ENDIAN
1197 bool "Little endian"
1198 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1205 config SYS_SUPPORTS_APM_EMULATION
1208 config SYS_SUPPORTS_BIG_ENDIAN
1211 config SYS_SUPPORTS_LITTLE_ENDIAN
1214 config SYS_SUPPORTS_HUGETLBFS
1216 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1219 config MIPS_HUGE_TLB_SUPPORT
1220 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1237 config PCI_GT64XXX_PCI0
1240 config NO_EXCEPT_FILL
1247 select DMA_NONCOHERENT
1249 select SWAP_IO_SPACE
1250 select SYS_HAS_CPU_R5500
1251 select SYS_SUPPORTS_32BIT_KERNEL
1252 select SYS_SUPPORTS_64BIT_KERNEL
1253 select SYS_SUPPORTS_BIG_ENDIAN
1260 select DMA_NONCOHERENT
1261 select SYS_HAS_CPU_MIPS32_R2
1262 select SYS_SUPPORTS_32BIT_KERNEL
1263 select SYS_SUPPORTS_LITTLE_ENDIAN
1264 select SYS_SUPPORTS_BIG_ENDIAN
1265 select SYS_SUPPORTS_MIPS16
1266 select CPU_MIPSR2_IRQ_VI
1275 config SWAP_IO_SPACE
1278 config SGI_HAS_INDYDOG
1290 config SGI_HAS_ZILOG
1293 config SGI_HAS_I8042
1296 config DEFAULT_SGI_PARTITION
1308 config MIPS_L1_CACHE_SHIFT_4
1311 config MIPS_L1_CACHE_SHIFT_5
1314 config MIPS_L1_CACHE_SHIFT_6
1317 config MIPS_L1_CACHE_SHIFT_7
1320 config MIPS_L1_CACHE_SHIFT
1322 default "7" if MIPS_L1_CACHE_SHIFT_7
1323 default "6" if MIPS_L1_CACHE_SHIFT_6
1324 default "5" if MIPS_L1_CACHE_SHIFT_5
1325 default "4" if MIPS_L1_CACHE_SHIFT_4
1328 config HAVE_STD_PC_SERIAL_PORT
1332 bool "ARC console support"
1333 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1337 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1342 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1351 menu "CPU selection"
1357 config CPU_LOONGSON3
1358 bool "Loongson 3 CPU"
1359 depends on SYS_HAS_CPU_LOONGSON3
1360 select CPU_SUPPORTS_64BIT_KERNEL
1361 select CPU_SUPPORTS_HIGHMEM
1362 select CPU_SUPPORTS_HUGEPAGES
1363 select WEAK_ORDERING
1364 select WEAK_REORDERING_BEYOND_LLSC
1365 select MIPS_PGD_C0_CONTEXT
1366 select MIPS_L1_CACHE_SHIFT_6
1369 The Loongson 3 processor implements the MIPS64R2 instruction
1370 set with many extensions.
1372 config LOONGSON3_ENHANCEMENT
1373 bool "New Loongson 3 CPU Enhancements"
1376 select CPU_HAS_PREFETCH
1377 depends on CPU_LOONGSON3
1379 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1380 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1381 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1382 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1383 Fast TLB refill support, etc.
1385 This option enable those enhancements which are not probed at run
1386 time. If you want a generic kernel to run on all Loongson 3 machines,
1387 please say 'N' here. If you want a high-performance kernel to run on
1388 new Loongson 3 machines only, please say 'Y' here.
1390 config CPU_LOONGSON2E
1392 depends on SYS_HAS_CPU_LOONGSON2E
1393 select CPU_LOONGSON2
1395 The Loongson 2E processor implements the MIPS III instruction set
1396 with many extensions.
1398 It has an internal FPGA northbridge, which is compatible to
1401 config CPU_LOONGSON2F
1403 depends on SYS_HAS_CPU_LOONGSON2F
1404 select CPU_LOONGSON2
1407 The Loongson 2F processor implements the MIPS III instruction set
1408 with many extensions.
1410 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1411 have a similar programming interface with FPGA northbridge used in
1414 config CPU_LOONGSON1B
1416 depends on SYS_HAS_CPU_LOONGSON1B
1417 select CPU_LOONGSON1
1418 select LEDS_GPIO_REGISTER
1420 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1421 release 2 instruction set.
1423 config CPU_LOONGSON1C
1425 depends on SYS_HAS_CPU_LOONGSON1C
1426 select CPU_LOONGSON1
1427 select LEDS_GPIO_REGISTER
1429 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1430 release 2 instruction set.
1432 config CPU_MIPS32_R1
1433 bool "MIPS32 Release 1"
1434 depends on SYS_HAS_CPU_MIPS32_R1
1435 select CPU_HAS_PREFETCH
1436 select CPU_SUPPORTS_32BIT_KERNEL
1437 select CPU_SUPPORTS_HIGHMEM
1439 Choose this option to build a kernel for release 1 or later of the
1440 MIPS32 architecture. Most modern embedded systems with a 32-bit
1441 MIPS processor are based on a MIPS32 processor. If you know the
1442 specific type of processor in your system, choose those that one
1443 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1444 Release 2 of the MIPS32 architecture is available since several
1445 years so chances are you even have a MIPS32 Release 2 processor
1446 in which case you should choose CPU_MIPS32_R2 instead for better
1449 config CPU_MIPS32_R2
1450 bool "MIPS32 Release 2"
1451 depends on SYS_HAS_CPU_MIPS32_R2
1452 select CPU_HAS_PREFETCH
1453 select CPU_SUPPORTS_32BIT_KERNEL
1454 select CPU_SUPPORTS_HIGHMEM
1455 select CPU_SUPPORTS_MSA
1458 Choose this option to build a kernel for release 2 or later of the
1459 MIPS32 architecture. Most modern embedded systems with a 32-bit
1460 MIPS processor are based on a MIPS32 processor. If you know the
1461 specific type of processor in your system, choose those that one
1462 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1464 config CPU_MIPS32_R6
1465 bool "MIPS32 Release 6"
1466 depends on SYS_HAS_CPU_MIPS32_R6
1467 select CPU_HAS_PREFETCH
1468 select CPU_SUPPORTS_32BIT_KERNEL
1469 select CPU_SUPPORTS_HIGHMEM
1470 select CPU_SUPPORTS_MSA
1473 select MIPS_O32_FP64_SUPPORT
1475 Choose this option to build a kernel for release 6 or later of the
1476 MIPS32 architecture. New MIPS processors, starting with the Warrior
1477 family, are based on a MIPS32r6 processor. If you own an older
1478 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1480 config CPU_MIPS64_R1
1481 bool "MIPS64 Release 1"
1482 depends on SYS_HAS_CPU_MIPS64_R1
1483 select CPU_HAS_PREFETCH
1484 select CPU_SUPPORTS_32BIT_KERNEL
1485 select CPU_SUPPORTS_64BIT_KERNEL
1486 select CPU_SUPPORTS_HIGHMEM
1487 select CPU_SUPPORTS_HUGEPAGES
1489 Choose this option to build a kernel for release 1 or later of the
1490 MIPS64 architecture. Many modern embedded systems with a 64-bit
1491 MIPS processor are based on a MIPS64 processor. If you know the
1492 specific type of processor in your system, choose those that one
1493 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1494 Release 2 of the MIPS64 architecture is available since several
1495 years so chances are you even have a MIPS64 Release 2 processor
1496 in which case you should choose CPU_MIPS64_R2 instead for better
1499 config CPU_MIPS64_R2
1500 bool "MIPS64 Release 2"
1501 depends on SYS_HAS_CPU_MIPS64_R2
1502 select CPU_HAS_PREFETCH
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_64BIT_KERNEL
1505 select CPU_SUPPORTS_HIGHMEM
1506 select CPU_SUPPORTS_HUGEPAGES
1507 select CPU_SUPPORTS_MSA
1510 Choose this option to build a kernel for release 2 or later of the
1511 MIPS64 architecture. Many modern embedded systems with a 64-bit
1512 MIPS processor are based on a MIPS64 processor. If you know the
1513 specific type of processor in your system, choose those that one
1514 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1516 config CPU_MIPS64_R6
1517 bool "MIPS64 Release 6"
1518 depends on SYS_HAS_CPU_MIPS64_R6
1519 select CPU_HAS_PREFETCH
1520 select CPU_SUPPORTS_32BIT_KERNEL
1521 select CPU_SUPPORTS_64BIT_KERNEL
1522 select CPU_SUPPORTS_HIGHMEM
1523 select CPU_SUPPORTS_MSA
1525 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1528 Choose this option to build a kernel for release 6 or later of the
1529 MIPS64 architecture. New MIPS processors, starting with the Warrior
1530 family, are based on a MIPS64r6 processor. If you own an older
1531 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1535 depends on SYS_HAS_CPU_R3000
1537 select CPU_SUPPORTS_32BIT_KERNEL
1538 select CPU_SUPPORTS_HIGHMEM
1540 Please make sure to pick the right CPU type. Linux/MIPS is not
1541 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1542 *not* work on R4000 machines and vice versa. However, since most
1543 of the supported machines have an R4000 (or similar) CPU, R4x00
1544 might be a safe bet. If the resulting kernel does not work,
1545 try to recompile with R3000.
1549 depends on SYS_HAS_CPU_TX39XX
1550 select CPU_SUPPORTS_32BIT_KERNEL
1554 depends on SYS_HAS_CPU_VR41XX
1555 select CPU_SUPPORTS_32BIT_KERNEL
1556 select CPU_SUPPORTS_64BIT_KERNEL
1558 The options selects support for the NEC VR4100 series of processors.
1559 Only choose this option if you have one of these processors as a
1560 kernel built with this option will not run on any other type of
1561 processor or vice versa.
1565 depends on SYS_HAS_CPU_R4300
1566 select CPU_SUPPORTS_32BIT_KERNEL
1567 select CPU_SUPPORTS_64BIT_KERNEL
1569 MIPS Technologies R4300-series processors.
1573 depends on SYS_HAS_CPU_R4X00
1574 select CPU_SUPPORTS_32BIT_KERNEL
1575 select CPU_SUPPORTS_64BIT_KERNEL
1576 select CPU_SUPPORTS_HUGEPAGES
1578 MIPS Technologies R4000-series processors other than 4300, including
1579 the R4000, R4400, R4600, and 4700.
1583 depends on SYS_HAS_CPU_TX49XX
1584 select CPU_HAS_PREFETCH
1585 select CPU_SUPPORTS_32BIT_KERNEL
1586 select CPU_SUPPORTS_64BIT_KERNEL
1587 select CPU_SUPPORTS_HUGEPAGES
1591 depends on SYS_HAS_CPU_R5000
1592 select CPU_SUPPORTS_32BIT_KERNEL
1593 select CPU_SUPPORTS_64BIT_KERNEL
1594 select CPU_SUPPORTS_HUGEPAGES
1596 MIPS Technologies R5000-series processors other than the Nevada.
1600 depends on SYS_HAS_CPU_R5432
1601 select CPU_SUPPORTS_32BIT_KERNEL
1602 select CPU_SUPPORTS_64BIT_KERNEL
1603 select CPU_SUPPORTS_HUGEPAGES
1607 depends on SYS_HAS_CPU_R5500
1608 select CPU_SUPPORTS_32BIT_KERNEL
1609 select CPU_SUPPORTS_64BIT_KERNEL
1610 select CPU_SUPPORTS_HUGEPAGES
1612 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1617 depends on SYS_HAS_CPU_NEVADA
1618 select CPU_SUPPORTS_32BIT_KERNEL
1619 select CPU_SUPPORTS_64BIT_KERNEL
1620 select CPU_SUPPORTS_HUGEPAGES
1622 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1626 depends on SYS_HAS_CPU_R8000
1627 select CPU_HAS_PREFETCH
1628 select CPU_SUPPORTS_64BIT_KERNEL
1630 MIPS Technologies R8000 processors. Note these processors are
1631 uncommon and the support for them is incomplete.
1635 depends on SYS_HAS_CPU_R10000
1636 select CPU_HAS_PREFETCH
1637 select CPU_SUPPORTS_32BIT_KERNEL
1638 select CPU_SUPPORTS_64BIT_KERNEL
1639 select CPU_SUPPORTS_HIGHMEM
1640 select CPU_SUPPORTS_HUGEPAGES
1642 MIPS Technologies R10000-series processors.
1646 depends on SYS_HAS_CPU_RM7000
1647 select CPU_HAS_PREFETCH
1648 select CPU_SUPPORTS_32BIT_KERNEL
1649 select CPU_SUPPORTS_64BIT_KERNEL
1650 select CPU_SUPPORTS_HIGHMEM
1651 select CPU_SUPPORTS_HUGEPAGES
1655 depends on SYS_HAS_CPU_SB1
1656 select CPU_SUPPORTS_32BIT_KERNEL
1657 select CPU_SUPPORTS_64BIT_KERNEL
1658 select CPU_SUPPORTS_HIGHMEM
1659 select CPU_SUPPORTS_HUGEPAGES
1660 select WEAK_ORDERING
1662 config CPU_CAVIUM_OCTEON
1663 bool "Cavium Octeon processor"
1664 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1665 select CPU_HAS_PREFETCH
1666 select CPU_SUPPORTS_64BIT_KERNEL
1667 select WEAK_ORDERING
1668 select CPU_SUPPORTS_HIGHMEM
1669 select CPU_SUPPORTS_HUGEPAGES
1670 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1671 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1672 select MIPS_L1_CACHE_SHIFT_7
1675 The Cavium Octeon processor is a highly integrated chip containing
1676 many ethernet hardware widgets for networking tasks. The processor
1677 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1678 Full details can be found at http://www.caviumnetworks.com.
1681 bool "Broadcom BMIPS"
1682 depends on SYS_HAS_CPU_BMIPS
1684 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1685 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1686 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1687 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1688 select CPU_SUPPORTS_32BIT_KERNEL
1689 select DMA_NONCOHERENT
1691 select SWAP_IO_SPACE
1692 select WEAK_ORDERING
1693 select CPU_SUPPORTS_HIGHMEM
1694 select CPU_HAS_PREFETCH
1695 select CPU_SUPPORTS_CPUFREQ
1696 select MIPS_EXTERNAL_TIMER
1698 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1701 bool "Netlogic XLR SoC"
1702 depends on SYS_HAS_CPU_XLR
1703 select CPU_SUPPORTS_32BIT_KERNEL
1704 select CPU_SUPPORTS_64BIT_KERNEL
1705 select CPU_SUPPORTS_HIGHMEM
1706 select CPU_SUPPORTS_HUGEPAGES
1707 select WEAK_ORDERING
1708 select WEAK_REORDERING_BEYOND_LLSC
1710 Netlogic Microsystems XLR/XLS processors.
1713 bool "Netlogic XLP SoC"
1714 depends on SYS_HAS_CPU_XLP
1715 select CPU_SUPPORTS_32BIT_KERNEL
1716 select CPU_SUPPORTS_64BIT_KERNEL
1717 select CPU_SUPPORTS_HIGHMEM
1718 select WEAK_ORDERING
1719 select WEAK_REORDERING_BEYOND_LLSC
1720 select CPU_HAS_PREFETCH
1722 select CPU_SUPPORTS_HUGEPAGES
1723 select MIPS_ASID_BITS_VARIABLE
1725 Netlogic Microsystems XLP processors.
1728 config CPU_MIPS32_3_5_FEATURES
1729 bool "MIPS32 Release 3.5 Features"
1730 depends on SYS_HAS_CPU_MIPS32_R3_5
1731 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1733 Choose this option to build a kernel for release 2 or later of the
1734 MIPS32 architecture including features from the 3.5 release such as
1735 support for Enhanced Virtual Addressing (EVA).
1737 config CPU_MIPS32_3_5_EVA
1738 bool "Enhanced Virtual Addressing (EVA)"
1739 depends on CPU_MIPS32_3_5_FEATURES
1743 Choose this option if you want to enable the Enhanced Virtual
1744 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1745 One of its primary benefits is an increase in the maximum size
1746 of lowmem (up to 3GB). If unsure, say 'N' here.
1748 config CPU_MIPS32_R5_FEATURES
1749 bool "MIPS32 Release 5 Features"
1750 depends on SYS_HAS_CPU_MIPS32_R5
1751 depends on CPU_MIPS32_R2
1753 Choose this option to build a kernel for release 2 or later of the
1754 MIPS32 architecture including features from release 5 such as
1755 support for Extended Physical Addressing (XPA).
1757 config CPU_MIPS32_R5_XPA
1758 bool "Extended Physical Addressing (XPA)"
1759 depends on CPU_MIPS32_R5_FEATURES
1761 depends on !PAGE_SIZE_4KB
1762 depends on SYS_SUPPORTS_HIGHMEM
1765 select ARCH_PHYS_ADDR_T_64BIT
1768 Choose this option if you want to enable the Extended Physical
1769 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1770 benefit is to increase physical addressing equal to or greater
1771 than 40 bits. Note that this has the side effect of turning on
1772 64-bit addressing which in turn makes the PTEs 64-bit in size.
1773 If unsure, say 'N' here.
1776 config CPU_NOP_WORKAROUNDS
1779 config CPU_JUMP_WORKAROUNDS
1782 config CPU_LOONGSON2F_WORKAROUNDS
1783 bool "Loongson 2F Workarounds"
1785 select CPU_NOP_WORKAROUNDS
1786 select CPU_JUMP_WORKAROUNDS
1788 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1789 require workarounds. Without workarounds the system may hang
1790 unexpectedly. For more information please refer to the gas
1791 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1793 Loongson 2F03 and later have fixed these issues and no workarounds
1794 are needed. The workarounds have no significant side effect on them
1795 but may decrease the performance of the system so this option should
1796 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1799 If unsure, please say Y.
1800 endif # CPU_LOONGSON2F
1802 config SYS_SUPPORTS_ZBOOT
1804 select HAVE_KERNEL_GZIP
1805 select HAVE_KERNEL_BZIP2
1806 select HAVE_KERNEL_LZ4
1807 select HAVE_KERNEL_LZMA
1808 select HAVE_KERNEL_LZO
1809 select HAVE_KERNEL_XZ
1811 config SYS_SUPPORTS_ZBOOT_UART16550
1813 select SYS_SUPPORTS_ZBOOT
1815 config SYS_SUPPORTS_ZBOOT_UART_PROM
1817 select SYS_SUPPORTS_ZBOOT
1819 config CPU_LOONGSON2
1821 select CPU_SUPPORTS_32BIT_KERNEL
1822 select CPU_SUPPORTS_64BIT_KERNEL
1823 select CPU_SUPPORTS_HIGHMEM
1824 select CPU_SUPPORTS_HUGEPAGES
1826 config CPU_LOONGSON1
1830 select CPU_HAS_PREFETCH
1831 select CPU_SUPPORTS_32BIT_KERNEL
1832 select CPU_SUPPORTS_HIGHMEM
1833 select CPU_SUPPORTS_CPUFREQ
1835 config CPU_BMIPS32_3300
1836 select SMP_UP if SMP
1839 config CPU_BMIPS4350
1841 select SYS_SUPPORTS_SMP
1842 select SYS_SUPPORTS_HOTPLUG_CPU
1844 config CPU_BMIPS4380
1846 select MIPS_L1_CACHE_SHIFT_6
1847 select SYS_SUPPORTS_SMP
1848 select SYS_SUPPORTS_HOTPLUG_CPU
1851 config CPU_BMIPS5000
1853 select MIPS_CPU_SCACHE
1854 select MIPS_L1_CACHE_SHIFT_7
1855 select SYS_SUPPORTS_SMP
1856 select SYS_SUPPORTS_HOTPLUG_CPU
1859 config SYS_HAS_CPU_LOONGSON3
1861 select CPU_SUPPORTS_CPUFREQ
1864 config SYS_HAS_CPU_LOONGSON2E
1867 config SYS_HAS_CPU_LOONGSON2F
1869 select CPU_SUPPORTS_CPUFREQ
1870 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1871 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1873 config SYS_HAS_CPU_LOONGSON1B
1876 config SYS_HAS_CPU_LOONGSON1C
1879 config SYS_HAS_CPU_MIPS32_R1
1882 config SYS_HAS_CPU_MIPS32_R2
1885 config SYS_HAS_CPU_MIPS32_R3_5
1888 config SYS_HAS_CPU_MIPS32_R5
1891 config SYS_HAS_CPU_MIPS32_R6
1894 config SYS_HAS_CPU_MIPS64_R1
1897 config SYS_HAS_CPU_MIPS64_R2
1900 config SYS_HAS_CPU_MIPS64_R6
1903 config SYS_HAS_CPU_R3000
1906 config SYS_HAS_CPU_TX39XX
1909 config SYS_HAS_CPU_VR41XX
1912 config SYS_HAS_CPU_R4300
1915 config SYS_HAS_CPU_R4X00
1918 config SYS_HAS_CPU_TX49XX
1921 config SYS_HAS_CPU_R5000
1924 config SYS_HAS_CPU_R5432
1927 config SYS_HAS_CPU_R5500
1930 config SYS_HAS_CPU_NEVADA
1933 config SYS_HAS_CPU_R8000
1936 config SYS_HAS_CPU_R10000
1939 config SYS_HAS_CPU_RM7000
1942 config SYS_HAS_CPU_SB1
1945 config SYS_HAS_CPU_CAVIUM_OCTEON
1948 config SYS_HAS_CPU_BMIPS
1951 config SYS_HAS_CPU_BMIPS32_3300
1953 select SYS_HAS_CPU_BMIPS
1955 config SYS_HAS_CPU_BMIPS4350
1957 select SYS_HAS_CPU_BMIPS
1959 config SYS_HAS_CPU_BMIPS4380
1961 select SYS_HAS_CPU_BMIPS
1963 config SYS_HAS_CPU_BMIPS5000
1965 select SYS_HAS_CPU_BMIPS
1967 config SYS_HAS_CPU_XLR
1970 config SYS_HAS_CPU_XLP
1973 config MIPS_MALTA_PM
1974 depends on MIPS_MALTA
1980 # CPU may reorder R->R, R->W, W->R, W->W
1981 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1983 config WEAK_ORDERING
1987 # CPU may reorder reads and writes beyond LL/SC
1988 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1990 config WEAK_REORDERING_BEYOND_LLSC
1995 # These two indicate any level of the MIPS32 and MIPS64 architecture
1999 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2003 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2006 # These two indicate the revision of the architecture, either Release 1 or Release 2
2010 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2014 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2020 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2022 select HAVE_ARCH_BITREVERSE
2023 select MIPS_ASID_BITS_VARIABLE
2032 config SYS_SUPPORTS_32BIT_KERNEL
2034 config SYS_SUPPORTS_64BIT_KERNEL
2036 config CPU_SUPPORTS_32BIT_KERNEL
2038 config CPU_SUPPORTS_64BIT_KERNEL
2040 config CPU_SUPPORTS_CPUFREQ
2042 config CPU_SUPPORTS_ADDRWINCFG
2044 config CPU_SUPPORTS_HUGEPAGES
2046 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2048 config MIPS_PGD_C0_CONTEXT
2050 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2053 # Set to y for ptrace access to watch registers.
2055 config HARDWARE_WATCHPOINTS
2057 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2062 prompt "Kernel code model"
2064 You should only select this option if you have a workload that
2065 actually benefits from 64-bit processing or if your machine has
2066 large memory. You will only be presented a single option in this
2067 menu if your system does not support both 32-bit and 64-bit kernels.
2070 bool "32-bit kernel"
2071 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2074 Select this option if you want to build a 32-bit kernel.
2077 bool "64-bit kernel"
2078 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2080 Select this option if you want to build a 64-bit kernel.
2085 bool "KVM Guest Kernel"
2086 depends on BROKEN_ON_SMP
2088 Select this option if building a guest kernel for KVM (Trap & Emulate)
2091 config KVM_GUEST_TIMER_FREQ
2092 int "Count/Compare Timer Frequency (MHz)"
2093 depends on KVM_GUEST
2096 Set this to non-zero if building a guest kernel for KVM to skip RTC
2097 emulation when determining guest CPU Frequency. Instead, the guest's
2098 timer frequency is specified directly.
2100 config MIPS_VA_BITS_48
2101 bool "48 bits virtual memory"
2104 Support a maximum at least 48 bits of application virtual
2105 memory. Default is 40 bits or less, depending on the CPU.
2106 For page sizes 16k and above, this option results in a small
2107 memory overhead for page tables. For 4k page size, a fourth
2108 level of page tables is added which imposes both a memory
2109 overhead as well as slower TLB fault handling.
2114 prompt "Kernel page size"
2115 default PAGE_SIZE_4KB
2117 config PAGE_SIZE_4KB
2119 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2121 This option select the standard 4kB Linux page size. On some
2122 R3000-family processors this is the only available page size. Using
2123 4kB page size will minimize memory consumption and is therefore
2124 recommended for low memory systems.
2126 config PAGE_SIZE_8KB
2128 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2129 depends on !MIPS_VA_BITS_48
2131 Using 8kB page size will result in higher performance kernel at
2132 the price of higher memory consumption. This option is available
2133 only on R8000 and cnMIPS processors. Note that you will need a
2134 suitable Linux distribution to support this.
2136 config PAGE_SIZE_16KB
2138 depends on !CPU_R3000 && !CPU_TX39XX
2140 Using 16kB page size will result in higher performance kernel at
2141 the price of higher memory consumption. This option is available on
2142 all non-R3000 family processors. Note that you will need a suitable
2143 Linux distribution to support this.
2145 config PAGE_SIZE_32KB
2147 depends on CPU_CAVIUM_OCTEON
2148 depends on !MIPS_VA_BITS_48
2150 Using 32kB page size will result in higher performance kernel at
2151 the price of higher memory consumption. This option is available
2152 only on cnMIPS cores. Note that you will need a suitable Linux
2153 distribution to support this.
2155 config PAGE_SIZE_64KB
2157 depends on !CPU_R3000 && !CPU_TX39XX
2159 Using 64kB page size will result in higher performance kernel at
2160 the price of higher memory consumption. This option is available on
2161 all non-R3000 family processor. Not that at the time of this
2162 writing this option is still high experimental.
2166 config FORCE_MAX_ZONEORDER
2167 int "Maximum zone order"
2168 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2169 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2170 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2171 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2172 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2173 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2177 The kernel memory allocator divides physically contiguous memory
2178 blocks into "zones", where each zone is a power of two number of
2179 pages. This option selects the largest power of two that the kernel
2180 keeps in the memory allocator. If you need to allocate very large
2181 blocks of physically contiguous memory, then you may need to
2182 increase this value.
2184 This config option is actually maximum order plus one. For example,
2185 a value of 11 means that the largest free memory block is 2^10 pages.
2187 The page size is not necessarily 4KB. Keep this in mind
2188 when choosing a value for this option.
2193 config IP22_CPU_SCACHE
2198 # Support for a MIPS32 / MIPS64 style S-caches
2200 config MIPS_CPU_SCACHE
2204 config R5000_CPU_SCACHE
2208 config RM7000_CPU_SCACHE
2212 config SIBYTE_DMA_PAGEOPS
2213 bool "Use DMA to clear/copy pages"
2216 Instead of using the CPU to zero and copy pages, use a Data Mover
2217 channel. These DMA channels are otherwise unused by the standard
2218 SiByte Linux port. Seems to give a small performance benefit.
2220 config CPU_HAS_PREFETCH
2223 config CPU_GENERIC_DUMP_TLB
2225 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2229 default y if !(CPU_R3000 || CPU_TX39XX)
2231 config CPU_R4K_CACHE_TLB
2233 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2236 bool "MIPS MT SMP support (1 TC on each available VPE)"
2238 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2239 select CPU_MIPSR2_IRQ_VI
2240 select CPU_MIPSR2_IRQ_EI
2245 select SYS_SUPPORTS_SMP
2246 select SYS_SUPPORTS_SCHED_SMT
2247 select MIPS_PERF_SHARED_TC_COUNTERS
2249 This is a kernel model which is known as SMVP. This is supported
2250 on cores with the MT ASE and uses the available VPEs to implement
2251 virtual processors which supports SMP. This is equivalent to the
2252 Intel Hyperthreading feature. For further information go to
2253 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2259 bool "SMT (multithreading) scheduler support"
2260 depends on SYS_SUPPORTS_SCHED_SMT
2263 SMT scheduler support improves the CPU scheduler's decision making
2264 when dealing with MIPS MT enabled cores at a cost of slightly
2265 increased overhead in some places. If unsure say N here.
2267 config SYS_SUPPORTS_SCHED_SMT
2270 config SYS_SUPPORTS_MULTITHREADING
2273 config MIPS_MT_FPAFF
2274 bool "Dynamic FPU affinity for FP-intensive threads"
2276 depends on MIPS_MT_SMP
2278 config MIPSR2_TO_R6_EMULATOR
2279 bool "MIPS R2-to-R6 emulator"
2280 depends on CPU_MIPSR6
2283 Choose this option if you want to run non-R6 MIPS userland code.
2284 Even if you say 'Y' here, the emulator will still be disabled by
2285 default. You can enable it using the 'mipsr2emu' kernel option.
2286 The only reason this is a build-time option is to save ~14K from the
2289 config SYS_SUPPORTS_VPE_LOADER
2291 depends on SYS_SUPPORTS_MULTITHREADING
2293 Indicates that the platform supports the VPE loader, and provides
2296 config MIPS_VPE_LOADER
2297 bool "VPE loader support."
2298 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2299 select CPU_MIPSR2_IRQ_VI
2300 select CPU_MIPSR2_IRQ_EI
2303 Includes a loader for loading an elf relocatable object
2304 onto another VPE and running it.
2306 config MIPS_VPE_LOADER_CMP
2309 depends on MIPS_VPE_LOADER && MIPS_CMP
2311 config MIPS_VPE_LOADER_MT
2314 depends on MIPS_VPE_LOADER && !MIPS_CMP
2316 config MIPS_VPE_LOADER_TOM
2317 bool "Load VPE program into memory hidden from linux"
2318 depends on MIPS_VPE_LOADER
2321 The loader can use memory that is present but has been hidden from
2322 Linux using the kernel command line option "mem=xxMB". It's up to
2323 you to ensure the amount you put in the option and the space your
2324 program requires is less or equal to the amount physically present.
2326 config MIPS_VPE_APSP_API
2327 bool "Enable support for AP/SP API (RTLX)"
2328 depends on MIPS_VPE_LOADER
2331 config MIPS_VPE_APSP_API_CMP
2334 depends on MIPS_VPE_APSP_API && MIPS_CMP
2336 config MIPS_VPE_APSP_API_MT
2339 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2342 bool "MIPS CMP framework support (DEPRECATED)"
2343 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2346 select SYS_SUPPORTS_SMP
2347 select WEAK_ORDERING
2350 Select this if you are using a bootloader which implements the "CMP
2351 framework" protocol (ie. YAMON) and want your kernel to make use of
2352 its ability to start secondary CPUs.
2354 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2358 bool "MIPS Coherent Processing System support"
2359 depends on SYS_SUPPORTS_MIPS_CPS
2361 select MIPS_CPS_PM if HOTPLUG_CPU
2363 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2364 select SYS_SUPPORTS_HOTPLUG_CPU
2365 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2366 select SYS_SUPPORTS_SMP
2367 select WEAK_ORDERING
2369 Select this if you wish to run an SMP kernel across multiple cores
2370 within a MIPS Coherent Processing System. When this option is
2371 enabled the kernel will probe for other cores and boot them with
2372 no external assistance. It is safe to enable this when hardware
2373 support is unavailable.
2386 config SB1_PASS_2_WORKAROUNDS
2388 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2391 config SB1_PASS_2_1_WORKAROUNDS
2393 depends on CPU_SB1 && CPU_SB1_PASS_2
2397 config ARCH_PHYS_ADDR_T_64BIT
2401 prompt "SmartMIPS or microMIPS ASE support"
2403 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2406 Select this if you want neither microMIPS nor SmartMIPS support
2408 config CPU_HAS_SMARTMIPS
2409 depends on SYS_SUPPORTS_SMARTMIPS
2412 SmartMIPS is a extension of the MIPS32 architecture aimed at
2413 increased security at both hardware and software level for
2414 smartcards. Enabling this option will allow proper use of the
2415 SmartMIPS instructions by Linux applications. However a kernel with
2416 this option will not work on a MIPS core without SmartMIPS core. If
2417 you don't know you probably don't have SmartMIPS and should say N
2420 config CPU_MICROMIPS
2421 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2424 When this option is enabled the kernel will be built using the
2430 bool "Support for the MIPS SIMD Architecture"
2431 depends on CPU_SUPPORTS_MSA
2432 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2434 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2435 and a set of SIMD instructions to operate on them. When this option
2436 is enabled the kernel will support allocating & switching MSA
2437 vector register contexts. If you know that your kernel will only be
2438 running on CPUs which do not support MSA or that your userland will
2439 not be making use of it then you may wish to say N here to reduce
2440 the size & complexity of your kernel.
2454 # Vectored interrupt mode is an R2 feature
2456 config CPU_MIPSR2_IRQ_VI
2460 # Extended interrupt mode is an R2 feature
2462 config CPU_MIPSR2_IRQ_EI
2467 depends on !CPU_R3000
2473 config CPU_DADDI_WORKAROUNDS
2476 config CPU_R4000_WORKAROUNDS
2478 select CPU_R4400_WORKAROUNDS
2480 config CPU_R4400_WORKAROUNDS
2483 config MIPS_ASID_SHIFT
2485 default 6 if CPU_R3000 || CPU_TX39XX
2486 default 4 if CPU_R8000
2489 config MIPS_ASID_BITS
2491 default 0 if MIPS_ASID_BITS_VARIABLE
2492 default 6 if CPU_R3000 || CPU_TX39XX
2495 config MIPS_ASID_BITS_VARIABLE
2499 # - Highmem only makes sense for the 32-bit kernel.
2500 # - The current highmem code will only work properly on physically indexed
2501 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2502 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2503 # moment we protect the user and offer the highmem option only on machines
2504 # where it's known to be safe. This will not offer highmem on a few systems
2505 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2506 # indexed CPUs but we're playing safe.
2507 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2508 # know they might have memory configurations that could make use of highmem
2512 bool "High Memory Support"
2513 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2515 config CPU_SUPPORTS_HIGHMEM
2518 config SYS_SUPPORTS_HIGHMEM
2521 config SYS_SUPPORTS_SMARTMIPS
2524 config SYS_SUPPORTS_MICROMIPS
2527 config SYS_SUPPORTS_MIPS16
2530 This option must be set if a kernel might be executed on a MIPS16-
2531 enabled CPU even if MIPS16 is not actually being used. In other
2532 words, it makes the kernel MIPS16-tolerant.
2534 config CPU_SUPPORTS_MSA
2537 config ARCH_FLATMEM_ENABLE
2539 depends on !NUMA && !CPU_LOONGSON2
2541 config ARCH_DISCONTIGMEM_ENABLE
2543 default y if SGI_IP27
2545 Say Y to support efficient handling of discontiguous physical memory,
2546 for architectures which are either NUMA (Non-Uniform Memory Access)
2547 or have huge holes in the physical address space for other reasons.
2548 See <file:Documentation/vm/numa> for more.
2550 config ARCH_SPARSEMEM_ENABLE
2552 select SPARSEMEM_STATIC
2556 depends on SYS_SUPPORTS_NUMA
2558 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2559 Access). This option improves performance on systems with more
2560 than two nodes; on two node systems it is generally better to
2561 leave it disabled; on single node systems disable this option
2564 config SYS_SUPPORTS_NUMA
2568 bool "Relocatable kernel"
2569 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2571 This builds a kernel image that retains relocation information
2572 so it can be loaded someplace besides the default 1MB.
2573 The relocations make the kernel binary about 15% larger,
2574 but are discarded at runtime
2576 config RELOCATION_TABLE_SIZE
2577 hex "Relocation table size"
2578 depends on RELOCATABLE
2579 range 0x0 0x01000000
2580 default "0x00100000"
2582 A table of relocation data will be appended to the kernel binary
2583 and parsed at boot to fix up the relocated kernel.
2585 This option allows the amount of space reserved for the table to be
2586 adjusted, although the default of 1Mb should be ok in most cases.
2588 The build will fail and a valid size suggested if this is too small.
2590 If unsure, leave at the default value.
2592 config RANDOMIZE_BASE
2593 bool "Randomize the address of the kernel image"
2594 depends on RELOCATABLE
2596 Randomizes the physical and virtual address at which the
2597 kernel image is loaded, as a security feature that
2598 deters exploit attempts relying on knowledge of the location
2599 of kernel internals.
2601 Entropy is generated using any coprocessor 0 registers available.
2603 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2607 config RANDOMIZE_BASE_MAX_OFFSET
2608 hex "Maximum kASLR offset" if EXPERT
2609 depends on RANDOMIZE_BASE
2610 range 0x0 0x40000000 if EVA || 64BIT
2611 range 0x0 0x08000000
2612 default "0x01000000"
2614 When kASLR is active, this provides the maximum offset that will
2615 be applied to the kernel image. It should be set according to the
2616 amount of physical RAM available in the target system minus
2617 PHYSICAL_START and must be a power of 2.
2619 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2620 EVA or 64-bit. The default is 16Mb.
2625 depends on NEED_MULTIPLE_NODES
2627 config HW_PERF_EVENTS
2628 bool "Enable hardware performance counter support for perf events"
2629 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2632 Enable hardware performance counter support for perf events. If
2633 disabled, perf events will use software events only.
2638 bool "Multi-Processing support"
2639 depends on SYS_SUPPORTS_SMP
2641 This enables support for systems with more than one CPU. If you have
2642 a system with only one CPU, say N. If you have a system with more
2643 than one CPU, say Y.
2645 If you say N here, the kernel will run on uni- and multiprocessor
2646 machines, but will use only one CPU of a multiprocessor machine. If
2647 you say Y here, the kernel will run on many, but not all,
2648 uniprocessor machines. On a uniprocessor machine, the kernel
2649 will run faster if you say N here.
2651 People using multiprocessor machines who say Y here should also say
2652 Y to "Enhanced Real Time Clock Support", below.
2654 See also the SMP-HOWTO available at
2655 <http://www.tldp.org/docs.html#howto>.
2657 If you don't know what to do here, say N.
2660 bool "Support for hot-pluggable CPUs"
2661 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2663 Say Y here to allow turning CPUs off and on. CPUs can be
2664 controlled through /sys/devices/system/cpu.
2665 (Note: power management support will enable this option
2666 automatically on SMP systems. )
2667 Say N if you want to disable CPU hotplug.
2672 config SYS_SUPPORTS_MIPS_CMP
2675 config SYS_SUPPORTS_MIPS_CPS
2678 config SYS_SUPPORTS_SMP
2681 config NR_CPUS_DEFAULT_4
2684 config NR_CPUS_DEFAULT_8
2687 config NR_CPUS_DEFAULT_16
2690 config NR_CPUS_DEFAULT_32
2693 config NR_CPUS_DEFAULT_64
2697 int "Maximum number of CPUs (2-256)"
2700 default "4" if NR_CPUS_DEFAULT_4
2701 default "8" if NR_CPUS_DEFAULT_8
2702 default "16" if NR_CPUS_DEFAULT_16
2703 default "32" if NR_CPUS_DEFAULT_32
2704 default "64" if NR_CPUS_DEFAULT_64
2706 This allows you to specify the maximum number of CPUs which this
2707 kernel will support. The maximum supported value is 32 for 32-bit
2708 kernel and 64 for 64-bit kernels; the minimum value which makes
2709 sense is 1 for Qemu (useful only for kernel debugging purposes)
2710 and 2 for all others.
2712 This is purely to save memory - each supported CPU adds
2713 approximately eight kilobytes to the kernel image. For best
2714 performance should round up your number of processors to the next
2717 config MIPS_PERF_SHARED_TC_COUNTERS
2720 config MIPS_NR_CPU_NR_MAP_1024
2723 config MIPS_NR_CPU_NR_MAP
2726 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2727 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2730 # Timer Interrupt Frequency Configuration
2734 prompt "Timer frequency"
2737 Allows the configuration of the timer frequency.
2740 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2743 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2746 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2749 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2752 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2755 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2758 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2761 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2765 config SYS_SUPPORTS_24HZ
2768 config SYS_SUPPORTS_48HZ
2771 config SYS_SUPPORTS_100HZ
2774 config SYS_SUPPORTS_128HZ
2777 config SYS_SUPPORTS_250HZ
2780 config SYS_SUPPORTS_256HZ
2783 config SYS_SUPPORTS_1000HZ
2786 config SYS_SUPPORTS_1024HZ
2789 config SYS_SUPPORTS_ARBIT_HZ
2791 default y if !SYS_SUPPORTS_24HZ && \
2792 !SYS_SUPPORTS_48HZ && \
2793 !SYS_SUPPORTS_100HZ && \
2794 !SYS_SUPPORTS_128HZ && \
2795 !SYS_SUPPORTS_250HZ && \
2796 !SYS_SUPPORTS_256HZ && \
2797 !SYS_SUPPORTS_1000HZ && \
2798 !SYS_SUPPORTS_1024HZ
2804 default 100 if HZ_100
2805 default 128 if HZ_128
2806 default 250 if HZ_250
2807 default 256 if HZ_256
2808 default 1000 if HZ_1000
2809 default 1024 if HZ_1024
2812 def_bool HIGH_RES_TIMERS
2814 source "kernel/Kconfig.preempt"
2817 bool "Kexec system call"
2820 kexec is a system call that implements the ability to shutdown your
2821 current kernel, and to start another kernel. It is like a reboot
2822 but it is independent of the system firmware. And like a reboot
2823 you can start any kernel with it, not just Linux.
2825 The name comes from the similarity to the exec system call.
2827 It is an ongoing process to be certain the hardware in a machine
2828 is properly shutdown, so do not be surprised if this code does not
2829 initially work for you. As of this writing the exact hardware
2830 interface is strongly in flux, so no good recommendation can be
2834 bool "Kernel crash dumps"
2836 Generate crash dump after being started by kexec.
2837 This should be normally only set in special crash dump kernels
2838 which are loaded in the main kernel with kexec-tools into
2839 a specially reserved region and then later executed after
2840 a crash by kdump/kexec. The crash dump kernel must be compiled
2841 to a memory address not used by the main kernel or firmware using
2844 config PHYSICAL_START
2845 hex "Physical address where the kernel is loaded"
2846 default "0xffffffff84000000" if 64BIT
2847 default "0x84000000" if 32BIT
2848 depends on CRASH_DUMP
2850 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2851 If you plan to use kernel for capturing the crash dump change
2852 this value to start of the reserved region (the "X" value as
2853 specified in the "crashkernel=YM@XM" command line boot parameter
2854 passed to the panic-ed kernel).
2857 bool "Enable seccomp to safely compute untrusted bytecode"
2861 This kernel feature is useful for number crunching applications
2862 that may need to compute untrusted bytecode during their
2863 execution. By using pipes or other transports made available to
2864 the process as file descriptors supporting the read/write
2865 syscalls, it's possible to isolate those applications in
2866 their own address space using seccomp. Once seccomp is
2867 enabled via /proc/<pid>/seccomp, it cannot be disabled
2868 and the task is only allowed to execute a few safe syscalls
2869 defined by each seccomp mode.
2871 If unsure, say Y. Only embedded should say N here.
2873 config MIPS_O32_FP64_SUPPORT
2874 bool "Support for O32 binaries using 64-bit FP"
2875 depends on 32BIT || MIPS32_O32
2877 When this is enabled, the kernel will support use of 64-bit floating
2878 point registers with binaries using the O32 ABI along with the
2879 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2880 32-bit MIPS systems this support is at the cost of increasing the
2881 size and complexity of the compiled FPU emulator. Thus if you are
2882 running a MIPS32 system and know that none of your userland binaries
2883 will require 64-bit floating point, you may wish to reduce the size
2884 of your kernel & potentially improve FP emulation performance by
2887 Although binutils currently supports use of this flag the details
2888 concerning its effect upon the O32 ABI in userland are still being
2889 worked on. In order to avoid userland becoming dependant upon current
2890 behaviour before the details have been finalised, this option should
2891 be considered experimental and only enabled by those working upon
2899 select OF_EARLY_FLATTREE
2906 prompt "Kernel appended dtb support" if USE_OF
2907 default MIPS_NO_APPENDED_DTB
2909 config MIPS_NO_APPENDED_DTB
2912 Do not enable appended dtb support.
2914 config MIPS_ELF_APPENDED_DTB
2917 With this option, the boot code will look for a device tree binary
2918 DTB) included in the vmlinux ELF section .appended_dtb. By default
2919 it is empty and the DTB can be appended using binutils command
2922 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2924 This is meant as a backward compatiblity convenience for those
2925 systems with a bootloader that can't be upgraded to accommodate
2926 the documented boot protocol using a device tree.
2928 config MIPS_RAW_APPENDED_DTB
2929 bool "vmlinux.bin or vmlinuz.bin"
2931 With this option, the boot code will look for a device tree binary
2932 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2933 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2935 This is meant as a backward compatibility convenience for those
2936 systems with a bootloader that can't be upgraded to accommodate
2937 the documented boot protocol using a device tree.
2939 Beware that there is very little in terms of protection against
2940 this option being confused by leftover garbage in memory that might
2941 look like a DTB header after a reboot if no actual DTB is appended
2942 to vmlinux.bin. Do not leave this option active in a production kernel
2943 if you don't intend to always append a DTB.
2947 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2948 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2951 default MIPS_CMDLINE_FROM_BOOTLOADER
2953 config MIPS_CMDLINE_FROM_DTB
2955 bool "Dtb kernel arguments if available"
2957 config MIPS_CMDLINE_DTB_EXTEND
2959 bool "Extend dtb kernel arguments with bootloader arguments"
2961 config MIPS_CMDLINE_FROM_BOOTLOADER
2962 bool "Bootloader kernel arguments if available"
2964 config MIPS_CMDLINE_BUILTIN_EXTEND
2965 depends on CMDLINE_BOOL
2966 bool "Extend builtin kernel arguments with bootloader arguments"
2971 config LOCKDEP_SUPPORT
2975 config STACKTRACE_SUPPORT
2979 config HAVE_LATENCYTOP_SUPPORT
2983 config PGTABLE_LEVELS
2985 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2986 default 3 if 64BIT && !PAGE_SIZE_64KB
2989 source "init/Kconfig"
2991 source "kernel/Kconfig.freezer"
2993 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3001 bool "Support for PCI controller"
3002 depends on HW_HAS_PCI
3005 Find out whether you have a PCI motherboard. PCI is the name of a
3006 bus system, i.e. the way the CPU talks to the other stuff inside
3007 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3011 bool "Support for HT-linked PCI"
3013 depends on CPU_LOONGSON3
3017 Loongson family machines use Hyper-Transport bus for inter-core
3018 connection and device connection. The PCI bus is a subordinate
3019 linked at HT. Choose Y for Loongson-3 based machines.
3024 config PCI_DOMAINS_GENERIC
3027 config PCI_DRIVERS_GENERIC
3028 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3031 config PCI_DRIVERS_LEGACY
3032 def_bool !PCI_DRIVERS_GENERIC
3033 select NO_GENERIC_PCI_IOPORT_MAP
3035 source "drivers/pci/Kconfig"
3038 # ISA support is now enabled via select. Too many systems still have the one
3039 # or other ISA chip on the board that users don't know about so don't expect
3040 # users to choose the right thing ...
3047 depends on HW_HAS_EISA
3049 select GENERIC_ISA_DMA
3051 The Extended Industry Standard Architecture (EISA) bus was
3052 developed as an open alternative to the IBM MicroChannel bus.
3054 The EISA bus provided some of the features of the IBM MicroChannel
3055 bus while maintaining backward compatibility with cards made for
3056 the older ISA bus. The EISA bus saw limited use between 1988 and
3057 1995 when it was made obsolete by the PCI bus.
3059 Say Y here if you are building a kernel for an EISA-based machine.
3063 source "drivers/eisa/Kconfig"
3066 bool "TURBOchannel support"
3067 depends on MACH_DECSTATION
3069 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3070 processors. TURBOchannel programming specifications are available
3072 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3074 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3075 Linux driver support status is documented at:
3076 <http://www.linux-mips.org/wiki/DECstation>
3082 config ARCH_MMAP_RND_BITS_MIN
3086 config ARCH_MMAP_RND_BITS_MAX
3090 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3093 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3100 select MIPS_EXTERNAL_TIMER
3108 source "drivers/pcmcia/Kconfig"
3111 tristate "RapidIO support"
3115 If you say Y here, the kernel will include drivers and
3116 infrastructure code to support RapidIO interconnect devices.
3118 source "drivers/rapidio/Kconfig"
3122 menu "Executable file formats"
3124 source "fs/Kconfig.binfmt"
3129 config MIPS32_COMPAT
3135 config SYSVIPC_COMPAT
3139 bool "Kernel support for o32 binaries"
3141 select ARCH_WANT_OLD_COMPAT_IPC
3143 select MIPS32_COMPAT
3144 select SYSVIPC_COMPAT if SYSVIPC
3146 Select this option if you want to run o32 binaries. These are pure
3147 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3148 existing binaries are in this format.
3153 bool "Kernel support for n32 binaries"
3156 select MIPS32_COMPAT
3157 select SYSVIPC_COMPAT if SYSVIPC
3159 Select this option if you want to run n32 binaries. These are
3160 64-bit binaries using 32-bit quantities for addressing and certain
3161 data that would normally be 64-bit. They are used in special
3168 default y if MIPS32_O32 || MIPS32_N32
3173 menu "Power management options"
3175 config ARCH_HIBERNATION_POSSIBLE
3177 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3179 config ARCH_SUSPEND_POSSIBLE
3181 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3183 source "kernel/power/Kconfig"
3187 config MIPS_EXTERNAL_TIMER
3190 menu "CPU Power Management"
3192 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3193 source "drivers/cpufreq/Kconfig"
3196 source "drivers/cpuidle/Kconfig"
3200 source "net/Kconfig"
3202 source "drivers/Kconfig"
3204 source "drivers/firmware/Kconfig"
3208 source "arch/mips/Kconfig.debug"
3210 source "security/Kconfig"
3212 source "crypto/Kconfig"
3214 source "lib/Kconfig"
3216 source "arch/mips/kvm/Kconfig"